Back
The winger was subbed off late on in the win over St Mirren on Saturday evening and it now appears injury played its part in that decision.
Despite earning his first senior cap in September, the 20-year-old was only included with the under-21s this time round - for two friendlies against Mexico. However, it is bow being reported he has had to be withdrawn.
That is reportedly down to a calf injury picked up during the 2-0 win in Paisley.
Coach Kim Eun-jung has replaced the Rangers star with Suwon Samsung Bluewings' Gyeol Kim.
The Korea Football Association (KFA) said in a statement: "Kim Min-su has been excluded from the call-up for player protection due to injury. Kim Gyeol (Suwon Samsung) will be called up as his replacement."
As he will still be 23, Minsu is eligible to play for his country in the 2028 Olympic Games and that is believed to have been a factor in him being included for the younger age group rather than with the top team.